Chin cup



FIG. 1 is a perspective view of a chin cup showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof; and,

FIG. 4 is a side view thereof, the opposite side being a mirror image.

The chin cup and straps shown in broken lines in FIGS. 1–4, form no partof the claimed design. The chin cup shown in broken lines in FIGS. 1, 2and 4 has been removed in FIG. 3 in order to show the inside of the chincup.

The ornamental design for a chin cup, as shown and described.